PhotoGrey
Photochromic eyeglasses are lenses that darken in response to exposure to UV (ultraviolet) light and become clear again when the UV light is removed. They are also commonly known as transition lenses, because they “transition” from clear to dark.
The lenses contain special molecules that react to UV light by changing their chemical structure, which causes the lens to darken. When the UV light is removed, the molecules return to their original state, causing the lens to become clear again.
Photochromic eyeglasses are a popular choice for people who want the convenience of not having to switch between regular eyeglasses and sunglasses when going outdoors. They offer protection from UV radiation, which can cause damage to the eyes over time.
However, it’s important to note that photochromic lenses may not darken as well in a car, because the windshield blocks some of the UV light. Additionally, the lenses may not darken as much in very cold temperatures, because the chemical reaction that causes the darkening is slower in colder conditions.
Overall, photochromic eyeglasses can be a great option for those who spend a lot of time outdoors and want the convenience of not having to switch between regular glasses and sunglasses.
